/ 
Bencher-Scenarios-IPCRun-0.001
River stage one • 1 direct dependent • 1 total dependent
/ Bencher::Scenario::IPCRun::run_stdin

NAME

Bencher::Scenario::IPCRun::run_stdin - Benchmark run()'s stdin vs opening a pipe

VERSION

This document describes version 0.001 of Bencher::Scenario::IPCRun::run_stdin (from Perl distribution Bencher-Scenarios-IPCRun), released on 2016-10-13.

SYNOPSIS

To run benchmark with default option:

% bencher -m IPCRun::run_stdin

To run module startup overhead benchmark:

% bencher --module-startup -m IPCRun::run_stdin

For more options (dump scenario, list/include/exclude/add participants, list/include/exclude/add datasets, etc), see bencher or run bencher --help.

DESCRIPTION

Packaging a benchmark script as a Bencher scenario makes it convenient to include/exclude/add participants/datasets (either via CLI or Perl code), send the result to a central repository, among others . See Bencher and bencher (CLI) for more details.

BENCHMARKED MODULES

Version numbers shown below are the versions used when running the sample benchmark.

IPC::Run 0.94

BENCHMARK PARTICIPANTS

  • IPC::Run::run (perl_code)

    Code template:

    state $in = "a" x <input_size>; IPC::Run::run(["true"], \$in) or die

  • system (perl_code)

    Code template:

    state $in = "a" x <input_size>; open my($fh), "|true" or die; print $fh $in

BENCHMARK DATASETS

  • 1024

SAMPLE BENCHMARK RESULTS

Run on: perl: v5.24.0, CPU: Intel(R) Core(TM) M-5Y71 CPU @ 1.20GHz (2 cores), OS: GNU/Linux LinuxMint version 17.3, OS kernel: Linux version 3.19.0-32-generic.

Benchmark with default options (bencher -m IPCRun::run_stdin):

#table1#
+---------------+---------+-----------+-----------+------------+---------+---------+
| participant   | dataset | rate (/s) | time (ms) | vs_slowest |  errors | samples |
+---------------+---------+-----------+-----------+------------+---------+---------+
| IPC::Run::run | 0       |       190 |      5.2  |        1   | 1.8e-05 |      20 |
| IPC::Run::run | 1024    |       193 |      5.19 |        1   | 5.2e-06 |      20 |
| system        | 1024    |       210 |      4.8  |        1.1 | 2.1e-05 |      20 |
| system        | 0       |       220 |      4.6  |        1.1 | 3.5e-05 |      20 |
+---------------+---------+-----------+-----------+------------+---------+---------+

Benchmark module startup overhead (bencher -m IPCRun::run_stdin --module-startup):

#table2#
+---------------------+-----------+------------------------+------------+---------+---------+
| participant         | time (ms) | mod_overhead_time (ms) | vs_slowest |  errors | samples |
+---------------------+-----------+------------------------+------------+---------+---------+
| IPC::Run            |      34.8 |                   29.4 |        1   | 2.9e-05 |      20 |
| perl -e1 (baseline) |       5.4 |                    0   |        6.4 | 1.5e-05 |      20 |
+---------------------+-----------+------------------------+------------+---------+---------+

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Bencher-Scenarios-IPCRun.

SOURCE

Source repository is at https://github.com/perlancar/perl-Bencher-Scenarios-IPCRun.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Bencher-Scenarios-IPCRun

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.

SEE ALSO

AUTHOR

perlancar <perlancar@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2016 by perlancar@cpan.org.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.